mpr: Minor formatting changes to match mps.

Minor reformatting nits to make mprsas_scsiio_timeout match
mpssas_scsiio_timeout more closely. The differences aren't necessary and
are distracting when comparing the routines. No functional changes.

Sponsored by: Netflix

(cherry picked from commit 2bbaed4d7fcace17c619536f4119b89058ed4392)